Daily chess puzzle: Check Mate # 87

Another puzzle from Dragoslav Andric's 1981 book “Matni Udar”.

White to play and win

Alekhine v Kussman, simul New York 1924

Solution

The first move, and Black's best reply are obvious. 1 Qb5+! Nd7

It is then not a hard task to see that there is no forced mate, but after 2 Rfe1 White's advantage is overwhelming, and White needn't calculate further. Black has a few replies. If say 2…Be7 then 3 Ned6+ and if 3…Kf8 then 4 Re7 1-0. Or if say 2…Bb4 then 3 Nf6++ and 4 Nd7+ 1-0

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